 !function() {
    //改变颜色
    document.body.style.backgroundColor="#f6f6f6";
    function n(n, e, t) {
    return n.getAttribute(e) || t
}
    function e(n) {
    return document.getElementsByTagName(n)
}
    function t() {
    var t = e("script"),
    o = t.length,
    i = t[o - 1];
    return {
    l: o,
    z: n(i, "zIndex", -1),
    o: n(i, "opacity", .5),
    c: n(i, "color", "0,0,0"),
    n: n(i, "count", 99)
}
}
    function o() {
    a = m.width = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth,
    c = m.height = window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight
}
    function i() {
    r.clearRect(0, 0, a, c);
    var n, e, t, o, m, l;
    s.forEach(function(i, x) {
    for (i.x += i.xa, i.y += i.ya, i.xa *= i.x > a || i.x < 0 ? -1 : 1, i.ya *= i.y > c || i.y < 0 ? -1 : 1, r.fillRect(i.x - .5, i.y - .5, 1, 1), e = x + 1; e < u.length; e++) n = u[e],
    null !== n.x && null !== n.y && (o = i.x - n.x, m = i.y - n.y, l = o * o + m * m, l < n.max && (n === y && l >= n.max / 2 && (i.x -= .03 * o, i.y -= .03 * m), t = (n.max - l) / n.max, r.beginPath(), r.lineWidth = t / 2, r.strokeStyle = "rgba(" + d.c + "," + (t + .2) + ")", r.moveTo(i.x, i.y), r.lineTo(n.x, n.y), r.stroke()))
}),
    x(i)
}
    var a, c, u, m = document.createElement("canvas"),
    d = t(),
    l = "c_n" + d.l,
    r = m.getContext("2d"),
    x = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame ||
    function(n) {
    window.setTimeout(n, 1e3 / 45)
},
    w = Math.random,
    y = {
    x: null,
    y: null,
    max: 2e4
};
    m.id = l,
    m.style.cssText = "position:fixed;top:0;left:0;z-index:" + d.z + ";opacity:" + d.o,
    e("body")[0].appendChild(m),
    o(),
    window.onresize = o,
    window.onmousemove = function(n) {
    n = n || window.event,
    y.x = n.clientX,
    y.y = n.clientY
},
    window.onmouseout = function() {
    y.x = null,
    y.y = null
};
    for (var s = [], f = 0; d.n > f; f++) {
    var h = w() * a,
    g = w() * c,
    v = 2 * w() - 1,
    p = 2 * w() - 1;
    s.push({
    x: h,
    y: g,
    xa: v,
    ya: p,
    max: 6e3
})
}
    u = s.concat([y]),
    setTimeout(function() {
    i()
},
    100)
} ();
